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8 TON AIR/MANUAL
Model
95967
®
FLAT BOTTOM JACK
OPERATION INSTRUCTIONS
Due to continuing improvements, actual product may differ slightly from the product described herein.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
TO PREVENT SERIOUS INJURY, READ AND UNDERSTAND
ALL WARNINGS AND INSTRUCTIONS BEFORE USE.
Copyright© 2007 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions or replacement parts, please call 1-800-444-3353.
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SPECIFICATIONS
Lifting Capacity 8 Tons (~16,000 Pounds)
Required Air Pressure 110 ~ 120 PSI
Air Inlet Size 1/4” - 18 NPT
Minimum Height 24-1/4”
Maximum Height 42-7/8”
Ram Diameter 1.336”
Stroke 18-5/8”
Ram Mounting Hole 16.5 mm (.65”)
Handle Length 19-5/8” X 13/16” O.D.
Hose Length 48”
Unit Weight 35.15 Pounds
Save This Manual
You will need this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the front
cover. Write the product’s serial number in the back of the manual near the assembly diagram, or write month and year of purchase if product has no number. Keep this manual
and invoice in a safe and dry place for future reference.
1.
2.
3.
GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in
electric shock, fire, and/or serious injury.
SAVE THESE INSTRUCTIONS
Keep your work area clean and well lit. Cluttered benches and dark areas invite
accidents.
Do not operate power tools in explosive atmospheres, such as in the pres-
ence of flammable liquids, gases, or dust. Power tools create sparks which may
ignite the dust or fumes.
Keep bystanders and children away while operating a power tool. Distractions
can cause you to lose control. Protect others in the work area from debris such as
chips and sparks. Provide barriers or shields as needed.
For technical questions, please call 1-800-444-3353.
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PERSONAL SAFETY
1.
2.
3.
4.
5.
Stay alert. Watch what you are doing, and use common sense when operating
a power tool. Do not use a power tool while tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while operating power tools may
result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep
your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or
long hair can be caught in moving parts.
Avoid accidental starting. Do not depress Lever (A34) until you are ready to
begin work.
Do not overreach. Keep proper footing and balance at all times. Proper footing
and balance enables better control of the power tool in unexpected situations.
Use safety equipment. Always wear eye protection. Dust mask, nonskid safety
shoes, hard hat, or hearing protection must be used for appropriate conditions. Al-
ways wear ANSI-approved safety goggles and a dust mask/respirator when using
or performing maintenance on this tool.
TOOL USE AND CARE
1.
2.
3.
4.
5.
1.
Do not force the tool. Use the correct tool for your application. The correct
tool will do the job better and safer at the rate for which it is designed. Do not force
the tool and do not use the tool for a purpose for which it is not intended.
Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
Maintain tools with care. Properly maintained tools are less likely to bind and
are easier to control. Do not use a damaged tool. Tag damaged tools “Do not use”
until repaired.
Check for misalignment or binding of moving parts, breakage of parts, and any
other condition that may affect the tool’s operation. If damaged, have the tool
serviced before using. Many accidents are caused by poorly maintained tools.
Use only accessories that are recommended by the manufacturer for this
model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
SERVICE
Tool service must be performed only by qualified repair personnel. Service or
maintenance performed by unqualified personnel could result in a risk of injury.
For technical questions, please call 1-800-444-3353.
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2.
When servicing a tool, use only identical replacement parts. Follow instructions
in this manual. Use of unauthorized parts or failure to follow maintenance instruc-
tions may create a risk of injury.
SPECIFIC SAFETY RULES
1.
2.
3.
4.
5.
6.
7.
NEVER use the Flat Bottom Jack unless it is properly and securely attached
first.
WARNING: DO NOT exceed the maximum lift capacity of 8 Tons (~16,000
pounds). Exceeding the maximum lifting capacity is dangerous and could cause
serious injury or property damage.
Maintain labels and nameplates on the tool. These carry important information.
If unreadable or missing, contact Harbor Freight Tools for a replacement.
Maintain a safe working environment. Make sure there is adequate surrounding
workspace. Do not use this product in a damp or wet location.
Do not alter Flat Bottom Jack’s 16.5 mm (0.65”) mounting hole. A mounting
pins (not included) must be used that is rated to support at least 8 Tons of pressure
and it must have R-Pins (not included) to lock the pin in place.
Use the Flat Bottom Jack only on a flat, level and solid surface capable of
supporting the combined weight of the lifting equipment, crane and load.
The Flat Bottom Jack is designed to lift loads only for short periods of time.
Do not use Long Ram Jack to suspend a load for more than 30 minutes at a time.
8.
9.
10.
11.
12.
13.
14.
Immediately after lifting, brace load with support equipment rated to handle
the load capacity. Do not work under a load suspended only by the Flat Bottom
Jack.
Do not attempt to move or shift object being lifted.
Twisting or sideways force exerted on the Jack could cause it to fail.
Do not attempt to move a load while it is supported by the Flat Bottom Jack.
The Jack must be used in a fixed position when lifting and lowering loads.
Before lowering a load, be certain that the area underneath the load is clear
of obstructions and personnel.
Industrial applications must meet OSHA requirements.
Use compressed air only. Use only clean, dry, regulated, compressed air between
110 and 120 PSI. Never use Oxygen, Carbon Dioxide, combustible gases or any
other bottled gas as a power source for this product.
For technical questions, please call 1-800-444-3353.
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15.
The Flat Bottom Jack is designed for vertical use only. Do not use in a hori-
zontal or upside down position.
16.
17.
18.
19.
NEVER attempt to adjust the factory pre-set Safety Valve on the Long Ram
Jack.
Not to be used for aircraft purposes.
Avoid unintentional starting. Make sure you are prepared to begin work before
turning on the tool.
WARNING! The warnings and cautions discussed in this manual cannot cover all
possible conditions and situations that may occur. It must be understood by the
operator that common sense and caution are factors which cannot be built into this
product, but must be supplied by the operator.
UNPACKING
When unpacking, check to make sure that the item is intact and undamaged. If any
parts are missing or broken, please call Harbor Freight Tools at the number shown on the
cover of this manual as soon as possible.
OPERATION
1.
Place the Flat Bottom Jack on a solid, level surface capable of bearing the combined
weight of the tool and load. Due to the variety of applications possible for this jack,
proper hardware suited for the application must be supplied by the user and proper
mounting procedures must be followed by the installer. If you are not familiar with
this type of work or have any doubt about your capability to safely install this jack,
have a qualified technician install the jack for you. To secure the top of the Hydraulic
Jack, slide a pin (not included) through the product and Ram (13). Make sure the
pin’s diameter is a push fit with just enough clearance so that it can move freely.
The pin should be held in place with appropriate clips or hardened cotter pins (not
included)..
Note: WARNING! The Pin must be rated to support at least 8 tons (~16,000
pounds) of pressure. (See Figure A.)
2.
3.
Insert the Handle (21) into the Handle Bracket (31).
Raising and Lowering:
To raise the Flat Bottom Jack turn the Release Valve (4) clockwise until the valve
•
is tightly closed. Pump the Handle (21) to raise the Jack. Continue to pump the
Handle (21) until the Flat Bottom is at the desired height.
To lower the Jack, first verify that the area under the object is clear, then turn the
•
Release Valve (4) counterclockwise. This will release pressure in the Jack and
cause the Jack to lower.
For technical questions, please call 1-800-444-3353.
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4.
Adding Hydraulic Oil:
Turn the Release Valve (4) counterclockwise until Jack is completely lowered.
•
Remove the Filler Plug (17) from the Reservoir (16). Fill the Reservoir (16) with
oil. Use a high quality hydraulic oil.
5.
Hydraulic System Bleeding Instructions:
Caution: Never bleed the system while Flat Bottom is under a load.
To bleed the Flat Bottom Jack, remove the Filler Plug (17) located on the Res-
a.
ervoir (16).
Open the Release Valve (4). Press and hold piston down.
b.
Insert the Handle (21) in the Handle Bracket (31) and slowly pump the Handle
c.
at least 10 times. Continue pumping until no more air bubbles appear.
Leave Handle in “down position” and turn clockwise to close Release Valve.
d.
Raise Handle and check oil level, if necessary, top off the Reservoir with hy-
e.
draulic oil.
Replace the Filler Plug.
f.
Test the Flat Bottom Jack’s performance several times before attempting to lift
g.
an object with the shop crane.
Once satisfied that the shop crane is operating properly, then the crane is ready
to lift an object. (See Figure D.)
INSPECTION, MAINTENANCE, AND CLEANING
BEFORE EACH USE, inspect the general condition of the tool. Check for loose
screws, misalignment or binding of moving parts, cracked or broken parts, damaged electrical wiring, and any other condition that may affect its safe operation. If abnormal noise
or vibration occurs, have the problem corrected before further use. Do not use damaged
equipment.
TROUBLESHOOTING
Problem Possible Causes Possible Solution
Jack will not lift load. Release Valve not tightly closed.
Jack will lift, but will not maintain
pressure.
Jack will not lower after it is raised. Reservoir overfilled.
Poor lift performance. Hydraulic oil level low.
Will not lift to maximum height. Hydraulic oil level low. Add oil to proper level.
For technical questions, please call 1-800-444-3353.
1.
Overload condition.
2.
Air supply inadequate.
3.
Air trapped in system.
4.
Release Valve not tightly closed.
1.
Overload condition.
2.
Hydraulic unit malfunction or defective
3.
seals.
1.
Linkages binding.
2.
1.
Air trapped in system.
2.
Close Release Valve firmly.
1.
Do not exceed 8 ton lifting capacity.
2.
Ensure adequate air supply.
3.
Purge air from system.
4.
Close Release Valve firmly.
1.
Do not exceed 8 ton lifting capacity.
2.
Have a qualified service technician
3.
check the hydraulic unit.
Drain oil to proper level.
1.
Clean and lubricate moving parts.
2.
Add oil to proper level.
1.
Purge air from system.
2.
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Part Description QTY
A02 Nut 1
A03 Sealing ring 1
A04 Nylon ring 1
A05 Copper ring 1
A06 Air cylinder seat 1
A07 Nut 1
A08 Spring 1
A09 Air pump piston 1
A10 O-ring 2
A11 Big piston 1
A12 Air cylinder 1
A13 Screw 2
A14 Lock washer 2
A15 Safety cover 1
A16 Filter 1
A17 Silencing pad 1
AIR PUMP ASSEMBLY
Part Description QTY
A18 Small piston 1
A19 O-ring 1
A20 O-ring 1
A21 Sealing ring 1
A22 Bolt 3
A23 Nylon ring 1
A24 O-ring 2
A26 Air cylinder cap 1
A27 Bolt 4
A28 Coupler seat 1
A29 Retaining ring 1
A30 O-ring 2
A31 Coupler 1
A32 Air hose 1
A33 Lock lever 1
A34 Lever 1
Part Description QTY
A35 Nut 1
A36 O-ring 1
A37 O-ring 1
A38 Packing 1
A39 Throttle 1
A40 Spring 1
A41 Lock nut 1
A42 Bolt 1
A43 Valve body 1
A44 Screw 1
A45 Screen 1
A46 O-ring 1
A47 Quick coupler-
male
A48 Coupler seat 1
1
For technical questions, please call 1-800-444-3353.
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GENERAL ASSEMBLY
Part Description Qty
1 Base 1
2 Ball 6
3 Seal 1
4 Release Valve 1
5 Ball Cup 2
6 Spring 1
7 Spring 1
8 Screw 2
9 Nylon Ring 1
10 Cylinder 1
11 O-Ring 1
12 Cup Seal 1
13 Ram 1
14 Ring 1
Part Description Qty
15 Packing 1
16 Reservoir 1
17 Filler Plug 1
18 Nylon Ring 1
19 Top Nut 1
20 O-Ring 1
21 Handle 1
22 Copper Washer 1
23 Pump Cylinder 1
24 O-Ring 1
25 Nylon Ring 1
26 Back-Up Ring 1
27 Piston 1
28 Pin 3
Part Description Qty
29 R-Pin 3
30 Connector 1
31 Handle Bracket 1
32 Air Valve 1
33 Air Hose 1
34 Air Motor 1
35 Ball 1
36 Ball Cup 1
37 Spring 1
38 Screw 1
39 O-Ring 1
40 Screw 1
41 Plastic Cap 1
For technical questions, please call 1-800-444-3353.
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PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER
OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER
THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR
SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER
AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS
SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE
BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS
TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS
OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
LIMITED 1 YEAR WARRANTY
Harbor Freight Tools Co. makes every effort to assure that its products meet high
quality and durability standards, and warrants to the original purchaser that this product is
free from defects in materials and workmanship for the period of one year from the date of
purchase (90 days if used by a professional contractor or if used as rental equipment). This
warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence
or accidents, repairs or alterations outside our facilities, normal wear and tear, or to lack
of maintenance. We shall in no event be liable for death, injuries to persons or property, or
for incidental, contingent, special or consequential damages arising from the use of our
product. Some states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation of exclusion may not apply to you. THIS WARRANTY IS
EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection verifies the defect, we will either
repair or replace the product at our election or we may elect to refund the purchase price
if we cannot readily and quickly provide you with a replacement. We will return repaired
products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning
the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts.
For technical questions, please call 1-800-444-3353.
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